linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * lib/bust_spinlocks.c

 *

 * Provides a minimal bust_spinlocks for architectures which don't

 * have one of their own.

 *

 * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()

 * and panic() information from reaching the user.

 */

​

#include <linux/kernel.h>

#include <linux/printk.h>

#include <linux/spinlock.h>

#include <linux/tty.h>

#include <linux/wait.h>

#include <linux/vt_kern.h>

#include <linux/console.h>

​

void bust_spinlocks(int yes)

{

    if (yes) {

        ++oops_in_progress;

    } else {

#ifdef CONFIG_VT

        unblank_screen();

#endif

        console_unblank();

        if (--oops_in_progress == 0)

            wake_up_klogd();

    }

}